Interaction between fire and fragmentation in the successional stages of coastal dune grasslands of the southern Pampas, Argentina
| Autor: | Ana Julia Nebbia, Alejandra Lorena Yezzi, Sergio Martín Zalba |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Biodiversity lcsh:Medicine 010603 evolutionary biology 01 natural sciences FIRE complex mixtures Grassland Article Ciencias Biológicas purl.org/becyt/ford/1 [https] natural sciences Plant ecology purl.org/becyt/ford/1.6 [https] lcsh:Science geography Multidisciplinary geography.geographical_feature_category Habitat fragmentation Fire regime Invasive species Ecology Conservation biology lcsh:R Fragmentation (computing) food and beverages Vegetation CONSEVATION 010601 ecology PSAMMOFILOUS GRASSLANDS Disturbance (ecology) Habitat Environmental science lcsh:Q FRAGMENTATION CIENCIAS NATURALES Y EXACTAS Conservación de la Biodiversidad |
| Zdroj: | Scientific Reports, Vol 9, Iss 1, Pp 1-9 (2019) CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET Scientific Reports |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/s41598-019-51595-x |
| Popis: | Vegetation’s increased vulnerability to extrinsic disturbances is an important but less studied efect of natural habitat fragmentation. Fire is part of the evolutionary history of grassland ecosystems, but fragmentation by forest plantations can alter the fre regime and infuence their resilience. This study compares the successional trajectories after fre in continuous and fragmented grassland in terms of composition and abundance of plant species. Grassland fragments of varying sizes (0.1 to 2.5ha) surrounded by a forest matrix and grassland controls of an equivalent area in adjacent, non-fragmented sites were selected. Fire was associated with an increase in the abundance of exotic plants in the fragmented grassland whereas the continuous grasslands were much more resistant to invasion. These diferences in the species composition between fragments and continuous areas, which were limited to the smaller areas before the fre, were observed one year after the fre throughout the range of sizes analyzed. These results show the impact of fragmentation on grassland resilience and how the efects of this process become evident even months after a disturbance, highlighting the synergistic efect of habitat fragmentation and biological invasions, two factors identifed as the main forces of biodiversity erosion. Fil: Yezzi, Alejandra Lorena. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia. Grupo de Estudios en Conservación y Manejo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina Fil: Nebbia, Ana Julia. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia. Grupo de Estudios en Conservación y Manejo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina Fil: Zalba, Sergio Martín. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia. Grupo de Estudios en Conservación y Manejo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina |
| Databáze: | OpenAIRE |
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